Pencil



A. E. Ausw/(MNH.

PENCIL.

APPLICATION FILED .IULY 29, |920u Patente Jun@ 2, 1921.

UNITED STATES PATENT OFFICE.

PENCIL.

Specioation of Letters Patent.

Patented June 21, 1921.

Application tiled July 29, 1920. Serial No. 399,824.

To all whom t may concern:

- Be it known that I, ALBERT E., ALLswoaTH, a citizen of' theUnited States, a resident of Peoria, in the county of Peoria and-State of Illinois, have invented new and useful Improvements in Pencils, of which the following is a specification'.

This invention has reference to improvements in pencils, and relates particularly to pencils of the self-sharpening class.

The invention has for its principal object to provide a pencil with sharpening means wholly incased within the pencil caslng and movable with and b the lead; whereby, as the lead is propelle forward a more effective sharpening of the lead is obtained.

The invention has for a further object the provision of means to return the sharpening means to its initial sharpening position when the lead is retracted for purposes of resharpening, and when new sections of lead are inserted in the pencil.

The invention contemplates a simplified structure in self sharpening pencils, and wherein' the parts may be -easily assembled and disassembled for removing the lead stubs and replacing the same with new lead stock.

That the invention may be more fully understood, reference is had to the accompanying drawingsforming part of the description, illustrating a preferred embodiment of the invention, in which Figure 1, is an enlarged longitudinal sectional view of a pencil embodyin my invention, the incased parts being s own in elevation, the lead being retracted;

Fig. 2, is a view somewhat similar to Fig. 1, except that'the lead holding and sharpening means are shown in lon 'tudinal section, with a part of the outsi e casing, and the lead protrudes through the casing point;

Fig. 3, is a cross-section as the same would appear if taken on the line 3-3 Fig. 2;

Fig. 4, is a cross-section as the same would :appear if taken on the line 4 4 Fig. 1;

Fig. 5, is a cross-section as the same would appear if taken onv the line 5-5 Fig. 1, and

Fig. 6, is a cross-section as the same would appear if taken on the line G-GFig. 2.

Like characters of reference denote corresponding parts throughout the figures.

rlhe pencil comprises the elongated tubular casing 1 made of any suitable material and internally threaded as at 2 which exlar member 10 which is normall tends from a point near its rear or upper end to a polnt approximately the center of the lengt of said casing. The front or lower end of said casing is tapered, as at 3 wlth a squared opening 4 extending part way therethrough and terminating in the round opening 5 in the tip. The juncture of the square opening 4 and the round opening 5 produces a shoulder 6. The said casing 1 near its rear or upper end is provided with the beaded portion 7 which receives a similar shaped annular rib 8 on the body of a cap 9 which is inserted into the end of the caslng. The said bead 7 and rib 8 providing for the easy attachment and detachment of the cap and yet permittin rotational movement of the cap for prope ling the lead and sharpening the same, as well as for retracting the lead holder to insert new stock.

Connected in any suitable and practical manner with the cap 9 is an elongated tubudisposed axlally within the casing 1 and ies within the tube for a considerable distance of its length and said tube 10 is slotted, as at 11 for a considerable portion of its length, see Fig. 1.. Carried by the tubular member 10 is a nut 12 the same being threaded leX- teriorly and .engagin the threads 2 arranged interiorly in t e casing 1, and said nut is formed with an approximate semispherical slot 13 through which the tube 10 is carried and by which means an operative connection is made between the tube 10 and the nut 12, 'so that when the cap 9 is turned, which in turn imparts rotational movement to the tube 10 the nut is threaded forwardly to propel the lead holding means to project the lead through the opening at the point or propelled rearwardly to remove the lead holding means to insert new stock. The nut 12 when it is screwed outwardly toward the cap will engage the same, and the continued outward movement -of the nut will release the rib 8 on the cap from the head -7 in the casing when the tube 10 and nut 12 with attached lead carrying means, may be removed. The outer or upper end of the casing 1 is split, as at 15, so that it willspread when pressure is brought to bear on the cap 9 by the nut 12, and will give so as to allow for the insertion of the ribbed portion of said casing 1 when it is inserted in the casing. rlhe tube 10 at or near its inner end is formed with an annular rib 16 which iits an annular beaded portion 17 on the inner end of a tube 18 with which the tube 1() has a telescopic relation, see lFig. 2. This tube 18 is split at its inner end, as at 19, so that the end of tube 18 will yield to the attachment and detachment of the ends of the two tubes 10 and 18 when it is desired to separate these members for the insertion of lead stock and the replacement of the parts again in the casing 1. The body 0f 'said tube 18 is also provided with an elongated slot to receive the lsharpening member to be described. The forward end of said tube 18 is tapered to t the tapered end 3 of the casing 1, and such tapered end is preferably square in cross-section, see Fig. 3, so that the tube 18 is held against rotational movement, yet permitting rotationaLmovement of the' tube 10 in the tube 18..

Connected axially to the nut 12 andextending forwardly therefrom is a rod or stem 21, of suitable length which lies within and axially of the tube 18 when said tube and the tube 10 are assembled. rlhe forward end o said rod or stem 21 is split, as at 22 for a portion of its length, has an enlarged head 23 and is threaded, as at 24. On the threaded portion of the said rod or stem 21 is carried a nut 25, which when it is screwed forwardly will cause the split end of said rod or stem to clamp a length of lead stock 26 inserted into the head 23. To release the lead stock the nut 25 is screwed in the opposite direction, as will be understood.

The tube 18 is formed or provided with the diametrically disposed ribs, vanes or tracks 27 which are preferably7 arranged on the tube in a position at ri ht angles to the slot 20, see Figs. 2.and 4. hese ribs, vanes or tracks extend longitudinally of the tube 18 and are preferably of curved formation starting in the center of the tubeand extendin forwardly and upwardly, see Fig.` 1.

`Sl1dable on said ribs, vanes or tracks is a saddle 28 that spans the tube 18 and is formed with the grooved ribs 29 which receive the ribs, vanes or tracks 27, see Fig. 4. The saddle is further formed or provided with a forwardly and downwardly inclined extension plate 30 which is capable of up and down and forward and rearward movement in the slot 20 in the tube 18 and the under face of the said late extension is provided with'a suitable e-surface 31, see Fig. 4.

The saddle 28 is retained in its normal retracted position, and returned to such position pre erably by means of a comparatively light coil spring 32, one end of w ich is attached to a lug 33 on the tube 18, see Figs. 1 and 5 and its other end attached to a lug 34 on the saddle 28, see Fi 1 and 4.

Assuming that a piece o lead stock 26 has been clamped in the holder 23 and the parts assembled preparato to the lead being propelled to and throng the ti of the pencil, and the parts being 1n the re ative positions f Fig. 2,

l resaca? shown in Fig. 1, the person holding the pencil will turn the cap 9 rotating the tube 10 and thenut 12. The rotation of the nut will carry it forward in the casing 1 at the same time pushin and turning the rod or st em 21 and the lead 26. The latter will ride against the file surface 31 of the plate extension. 30, which is then in its retracted or initial position and lying down and within the tube 18 and through the slot 20, see Fig. 1. LAS the lead is propelled forward bearing against the file plate 30, said plate together with the saddle moves forwardly also and the saddle being guided by the ribs, vanes or tracks 27 on the tube 18 is raised to the position shown in dotted lines' in. Fig. 1. The movement of the file by and with the lead provides ample time for the sharpening of the lead, which as stated, is rotated on the file during its forward movement, and eventually is protruded through the point of the pencil sharpened, as shown in the file plate resting immediately above the lead. The spring 32, as a result of the foregoing movement of the saddle has been expanded, and when the lead is retracted by a reverse rotational movement of the cap 9 the spring 32 is free to contract and return the saddle to its initial position with the le plate extending diagonally acros'sthe ath of the lead. 1t should be apparent rom the foregoing that in the event of the i said holder and lead and for propelling the same, the said sharpening means movable by and with the lead for a suitable distance.

3. In a self sharpening pencil, in combination, a lead holder, sharpening means,

means for imparting rotational movement to said holder and lead and for propelling same, and means yieldingly connected to sai holder for returning said sharpening means to its initial position, the said sharpening vmeans movable by and with the lead for a.

suitable distance.

s 4. In a self sharpening pencil, in combination, a lead holder, means for imparting rotational movement to said holder and lead and for propelling sharpening' means adapted to be engaged by the lead and propelled a suitable distance therewith,

same, and retractable n 5.' In a self sharpening pencil, in combination, a lead holder, means for imparting rotational movement to said holder and lead and for propelling same, retractable sharpening means adapted to be engaged by the lead and propelled a suitable distance therewith, and means to guide the sharpening means out of the path of the lead as the latter is propelled and sharpened.

6. In a self sharpening pencil, in combination, a lead holder, means connected thereto for propelling and retracting said holder, means to actuate said propelling means, and sharpening means having a detachable connection with said actuating means. A

7. In a self sharpening pencil, in combination, a lead holder, means connected thereto for propelling and 'retracting said holder, means to actuate said propelling .means, sharpening means having a detachableconnection with said actuating means, said sharpening means movable by and'with the lead as the latter is propelled.

8. In a Seli sharpening pencil, in combination, a lead holder, means connected thereto for propelling and retracting said holder, means to actuate said propelling means, sharpening means having a detachable connectlon with said actuating means and normally lying in the path of movement of the lead, said sharpening means movable b and with the lead as the latter is propelle and means to return the sharpening means to its initial position.

9. In a self sharpening pencil, incombination, a lead holder, means connected thereto for propelling and retracting said holder, means to actuate said propelling means, and non-rotatable sharpenlng means having a detachable connection with said actuating means.

10. In a self sharpening pencil, in combination, a lead holder, means connected thereto for propelling and retracting lsaid holder and imparting rotational movement thereto as it is propelled, means to actuate said propelling means, and non-rotatable sharpening means having4 a detachable connection With said actuating means.

11. In a pencil, in combination, a tubular casing having a tapered end which isA provided vvith a squared openin therein, a tubular member arranged axia ly in said casing, lead holding means, propelling means connected to said holding means and to said tube, a second tube having a detachable connection with said first tube and formed With a squared section fitting' the squared opening in the tapered end of said casing, and sharpening means attached to said second tube and normally lying in the path of movement of the lead.

12. In a pencil, in combination, a tubular casing, alined tubes in said casing having a detachable connection, one of said tubes rotatable and the other being non-rotatable,

' a lead holderpropelling means for said holder connectedto said rotatable tube, means to rotate said tube, and sharpening means connected to said non-rotatable tube and normally lying in the path of movement of. the lead. 'n

I3. In a self sharpening pencil, in combination, a'tubular casing, alined tubes in said casing, one rotatable and the other being nonrotatable, a lead holder, propelling means for said holder connected to said rotatable tube, means to rotate said tube, sharpening means on said non-rotatable tube and arranged to be engaged by the lead and moved therewith axially of said casing, means to guide the sharpening means as it is propelled to permit the passage of the lead,'and retractable means for said sharpening means.

In witness whereof, I havev hereunto af-v fixed my hand this 27th da of Jul 1920.

. ALBERT-E. A LSWOV TH. 

